What happens to setTimeout when the computer goes to sleep?

Question

In a modern web browser, suppose I do a setTimeout for 10 minutes (at 12:00), and 5 minutes later put the computer to sleep, what should happen when the system

Answer 1

Compare current datetime against datetime when the page was loaded, like so:

//Force refresh after x minutes.
var initialTime = new Date();
var checkSessionTimeout = function () {
    var minutes = Math.abs((initialTime - new Date()) / 1000 / 60);
    if (minutes > 20) {
        setInterval(function () { location.href = 'Audit.aspx' }, 5000)
    } 
};
setInterval(checkSessionTimeout, 1000);